ECD SYSTEM(w/ DPF), Diagnostic DTC:P011C

DTC Code DTC Name
P011C Charge Air Temperature - Intake Air Temperature Correlation Bank 1

DESCRIPTION

The engine has 2 temperature sensors, an intake air temperature sensor (charge air cooler duct side) and an intake air temperature sensor (built into mass air flow meter), to detect the temperature while the engine is operating. A thermistor, whose resistance value varies according to the temperature, is built into each sensor. When the temperature is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes. Based on these signals, the ECM increases the fuel injection volume to improve drivability with a cold engine.

P011C
DTC Detection Drive Pattern DTC Detection Condition Trouble Area

When the following conditions are met

(1) 6 hours or more have elapsed since the engine stopped on the previous trip

(2) Intake air temperature (charge air cooler duct side) is 0 to 60°C (32 to 140°F) when engine is started

(3) Difference in the intake air temperature (MAF) before and after starting the engine is within 3°C (5.4°F)

(4) Engine has been started and idles for about 1 minute

The difference between air temperature and changed air temperature is higher than 14°C (25.2°F) when DTC detection pattern is completed

(2 trip detection logic)

  • Intake air temperature sensor

  • Mass air flow meter (intake air temperature sensor)

  • ECM
Related Data List
DTC No. Data List
P011C

  • Intake Air

  • Intake air temp (Turbo)

Tech Tips

In order to satisfy the detection condition of this DTC, it is necessary to leave the vehicle with the engine stopped for 6 hours or more before restarting the engine.

CAUTION / NOTICE / HINT

Note

When replacing the ECM and/or injector assembly, the ECM needs Registration and Initialization Click here.

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P011C)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P011C is output A
      DTC P011C and other DTCs are output B

      Tech Tips

      If any DTCs other than P011C are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. READ VALUE USING GTS (INTAKE AIR AND INTAKE AIR TEMP (TURBO))


    1. Leave the vehicle for 6 hours or more.

      Tech Tips

      It is necessary to leave the vehicle for 6 hours or more to create conditions similar to the DTC detection conditions.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Start the engine and idle the engine for 1 minute or more.

    6. Enter the following menus: Engine and ECT / Data List / Intake Air and Intake Air Temp (Turbo).

    7. Read the value of Intake Air on the GTS.

      Standard
      Difference between the intake air temperature (Intake Air) and actual outside air temperature is within 10°C (18°F) or less.

      Tech Tips

      Temperature readings on the vehicle outside temperature gauge (if equipped) are not suitable for comparing to the intake air temperature reading. The outside temperature gauge has a significant delay built in to prevent swings in the temperature display. Use an accurate thermometer to determine the outside air temperature.

    8. Read the value of Intake Air Temp (Turbo) on the GTS.

      Standard
      Difference between the intake air temperature (Intake Air Temp (Turbo)) and actual outside air temperature is within 10°C (18°F) or less.

      Tech Tips

      Temperature readings on the vehicle outside temperature gauge (if equipped) are not suitable for comparing to the intake air temperature reading. The outside temperature gauge has a significant delay built in to prevent swings in the temperature display. Use an accurate thermometer to determine the outside air temperature.

      Result
      Result Proceed to
      OK A
      NG (Intake Air value deviated) B
      NG (Intake Air Temp (Turbo) value deviated) C

    A

    REPLACE ECM Click here

    B

    REPLACE MASS AIR FLOW METER Click here

    C

    REPLACE INTAKE AIR TEMPERATURE SENSOR Click here